Adjusting drive set General

The setting of drive pinion and ring gear is a determining factor for the service life and smooth running of the rear-axle drive. Drive pinions and ring gears that have been checked for good tooth contact pattern and low noise in both directions of rotation on special test equipment are therefore matched during production. The position at which smoothest running can be achieved is determined by shifting the drive pinion axially, with the ring gear being kept within the tolerance of the prescribed tooth backlash. The deviation ,,r" from the specified design dimension "Ro" is determined and is engraved on the outer circumference of the ring gear. Ring gear and drive pinion have been designed in such a manner that the deviation ,,r" always adds to the design dimension "Ro", i.e. it has a positive sign.

3 1 2

Ro = Design dimension (69.65 mm) r = Deviation ,,r"

1 = Deviation "r" (is always indicated in 1/100 mm. Example: +43 means ,,r" =0.43 mm)

3 = Matching number

E =Setting (actual dimension between ring gear axis and face of the drive pinion at the point of smoothest running for this particular drive set) E =Ro + r

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